Cheapest€131.12
- Frontier Airlines FA509308:402h 47m11:27Portland PDXDenver DEN
Door to door 5h 57mCO2 400.2 kgChanges 0Fixed, no changes
Portland to Denver flight
Flights from Portland to Denver start at €154.13 and take 5h 38m at their fastest.
The Flights from Portland to Denver starts at €154.13 and takes 5h 38m door to door, run by 4 operators over 1,627 km, with around 32 departures a day. Fares bottom out about 30 days before departure.
- 5h 38mDoor to door
- 2h 28mMoving
- €154.13From
- 400.2 kgCO2
The cheapest and the fastest on September 29, 2026
Two journeys we can sell today, with the service number each operator files them under.
Fastest€165.34
- Alaska Airlines AA377806:402h 28m09:08Portland PDXDenver DEN
Door to door 5h 38mCO2 400.2 kgChanges 0Fixed, no changes
Airlines
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From |
|---|---|
 Alaska Airlines | €132.89 |
 Frontier Airlines | €131.12 |
| United Airlines | €132.30 |
 Southwest Airlines | €134.66 |
The flight gets you into Denver. It does not get you a bed, and neither do we.
Looking for somewhere to stay in Denver?
Hotels and apartments near downtown, most of them with free cancellation, on a map that shows what is walkable.
Search Denver on Booking.comOr compare on Expedia
Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book Portland to Denver
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €161.2190 days
- €132.8960 days
- €115.1945 days
- €107.5230 days
- €149.4121 days
- €154.1314 days
- €186.587 days
- €204.873 days
- €239.091 days
- Cheapest lead time
- Fares bottom out around 30 days ahead, at €107.52.
- How much it moves
- The gap between the cheapest and most expensive lead time is 122 percent. The most expensive point is €239.09, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 30 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €154.13Sun
- €158.26Mon
- €156.49Tue
- €166.52Wed
- €208.41Thu
- €193.07Fri
- €206.64Sat
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Portland
Air
- PDX
Denver
Air
- DEN
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- How far it really runs
- The route covers 1,627 km against 1,579 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- First and last departure
- The first service of the day leaves Portland at 06:27 and the last at 20:53, across 32 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Portland to Denver
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Portland to Denver take?
The Flight from Portland to Denver takes 5h 38m door to door, of which 2h 28m is spent moving. The route runs 1,627 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Portland to Denver cost?
The Flight from Portland to Denver starts at €154.13 for one passenger, checked on September 13, 2026. A typical fare is €157.97. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Portland to Denver?
4 operators run the Flight from Portland to Denver: Alaska Airlines, Frontier Airlines, United Airlines, Southwest Airlines. Between them they file around 32 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Portland to Denver use?
The Flight from Portland to Denver leaves from Portland PDX and arrives at Denver DEN. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Portland to Denver?
Fares for the Flight from Portland to Denver bottom out around 30 days ahead, at €107.52. The gap between the cheapest and most expensive lead time across the window is 122 percent, measured on September 13, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Portland to Denver produce?
The Flight from Portland to Denver produces about 400.2 kg of CO2 per passenger over 1627 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Portland to Denver on September 13, 2026: 1627 km of route against 1579 km in a straight line, 32 services a day, 4 operators, a cheapest fare of €154.13, and 5h 38m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
Related journeys
Denver to Portland flightCompare every mode from Portland to DenverAbilene to Denver flightAkron to Denver flightAlbuquerque to Denver flightAllentown to Denver flightAmarillo to Denver flightAnchorage to Denver flightAsheville to Denver flightAtlanta to Denver flightAustin to Denver flightBakersfield to Denver flightBaltimore to Denver flightBend to Denver flight